Bolt lock



Feb. 12, 1957 J. R. GRIFFITH 2,781,215

BOLT Locx Filed May 5. 1955 2 suds-sheet 1 'INVENTOR. l JOSEP/l l2GP/FF/TH L BY XL WW AGE/VT Feb. 12, 1957 J. R. GRIFFITH BOLT LOCK 2Sheets-Sheet 2 Filed May 5, 1955 INVENTOR. JOSEPH P. G/P/FF/TH AGE/VTFIG. 6.

BOLT LOCK Joseph R. Grifi'ith,,Lynwood,-Calif.

Application May-5, 1955, Serial-No. 506,289

8 Claims. (CL'29-2- 148) Generally speaking, the present inventionrelates to the latch and lock arts and, more particularly, pertains to abolt lock attachable to a door, cooper-able with 'a padlock to lock saiddoor to a jamb, and selectively unlockable from one side of said doorand relockable from the other side of said door independently of saidpadlock.

It is an object of the present invention to provide a bolt lock adaptedto cooperate with a padlock to elfectively lock a door from 'a firstside thereof and serve as a manually openable latch from a second sidethereof.

It is also my object to provide a bolt lock, of the sort described inthe preceding object, which is of an especially simple, rugge efiectiveand novel construction, especially suited for use on heavy exteriordoors.

Other and allied objects of the present invention will occur to thoseskilled in the art after a careful study of the present specification,the accompanying illustrations, and the appended claims.

To facilitate understanding, reference will be made to thehereinbslow-described drawings, in which:

Fig. l is a perspective view of a preferred embodiment of the bolt lockof the present invention, locked with a padlock and with bolt means inextended, locked position; the padlock and certain invisible elementsare indicated by dashed lines;

Fig. 2 is a perspective view of the device of Fig. 1 after it has hadthe bolt means unlocked from theinside (second side)the parts shownsolidly have moved from the posi 'ons they occupied in Fig. -1, allstationary parts being indicated by dashed lines;

Fig. 3 is a perspective view of the device of Fig. 1 after it has beenunlocked, by removing the padlock, from the outside (first side), onlyparts which have been moved from the positions of Fig. 1 being shownsolidly;

Pig. 4 shows a section through the device of Fig. 1, taken along theplane, and in the direction, indicated by the line and arrows 44 of Fig.2; a second position of the handle and control means is shown in dashedlines;

Fig. 5 is an elevation of the device of Fig. 1 as seen, installed in adoor,from the second side thereof; and

Fig. 6 shows a section, from the position shown in Fig. 4, of anembodiment of the present invention in which the control means is ofdifferent construction from that shown in Figs. 1-4; parts similar tothose of the device of Figs. 1-4 are numbered similarly, but with primednumerals.

In the bolt lock illustrated in Figs. thebody means is asemi-cylindrical shell with closed ends, as indicated at 1. The opendiametral plane of the body means-is in use against the surface of thefirst side (left side in the figures) of a door A in which an aperture Bhas been provided as shown in Fig. 4. The body means has mountingflanges 2 which connect it to the door through the use of rivets orbolts (not shown) of a type non-removable from the first side andcooperable with mounting holes 3. On a portion 4 of the lower mountingflange this portion .4 maybe mounted separately 'on -thedor if 2,781,215 Patented Feb. 12, 195.7

-desiredstaple 5 is held. Apadlock'C is linked through it in Figs. 1 and2 to lock ha'sp 6 '(whose aperture fits over the staple) on the staple.Ha'sp 6 passes through a slot 7 in the semicylindrical shell 1. Throughan aperture 3 in the first end 1a of the shell 1, passes longitudinallyslideable bolt 9, which is rotatable about its lo'ngitudinal axis. Tolock the door the bolt end engages a bolt receptacle on a door jamb,which structures are well-known in the art and hence are deemed not torequire illustration. Projecting from bolt 9 are pin 10, handle 11 whichextends throughsaperture B to the second side of door A, and flange 12.A collar portion 6b of hasp 6 is slideable along the bolt 9 anddefines'an aperture whose ends are eugageable by pin 10. The aperture Bin the door is virtually rectangular: its length should allow the travelof handle -11 from the position of Fig. l to the position of Fig. 2 orFig. 3. As shown in Fig. 4, on the left side the wood of the door isfurther cut away below aperture B to allow the flange 12 to travelfreely between the two positions of Fig. 1 and Fig. 2.

Support piece 13, a portion of the body means, has a hole 13a throughwhich the bolt is movable. A compression pring 14 is held, between piece13 and the flange 1-2, around the bolt, biasing the flange and bolt awayfrom piece 13 in the outward direction of bolt movement. In Figs. 2 and3 the spring is compressed, the bolt being unlocked; in Fig. 1 thespring has pushed the bolt out to the extended locked position, the:movement between Fig. 2 and Fig. 1 being in said outward direction.

By comparing Fig. l with Fig. '3 it may be seen that to unlock the boltfrom the first side one removes the padlock C, removes hasp '6 fromstaple 5, and by moving the hasp along slot '7 withdraws the bolt (itsinward direction of movement), compressing spring 14 in the process; thecollar portion 6b of the hasp engages the pin 19 to move the bolt.

A second support piece 15 of the body means has a bearing hole throughwhich pin 16 passes rotatably, being held in place by a cotter pin and awasher. Pin 16 is a part of the catch 17, the detent region of whose camsurface is indicated at 18. The weight of the catch biases it againstflange 12; when the bolt is withdrmvn the dctent region engages theflange to maintain the bolt in an unlocked position. The bolt may berelocked from the first side by raising (in aperture 20) externalgraspable control 19-allowing the flange to leave the detent region, sothat the spring forces the bolt in its outward direction. From thesecond side, the bolt being unlocked (by handle 11) one can raise thecatch to relock the bolt by swinging handle 11 up against internalcontrol 21 as show'n in dashed lines at 11a, 17a, 19a and 21a in Fig. 4.Or, internal control 21 may be raised manually.

In Fig. 6 an embodiment is shown in which internal control means 21 issomewhat longer than that used in the form of the other Figs. so as topermit ease of man ual operation of the catch from the second side ofthe door; the catch is biased against the flange by a leaf spring 22attached to the body shall 1'; and the external control 19' has a studportion 23 which covers aperture 20 to prevent the entry of injuriousmaterials into the bolt lock and which allows effective manual operationof control 19. in this form of the bolt lock-although it is shown, likethe preceding form, in a horizontal position-the device may be used withthe bolt lying in a non-horizontal or effectively vertical position: thecatch does not depend on gravity to bias it against the flange. Theoutward direction of the bolt movement couldb'e either a wamor,preferably, downward (as infuse' on a dutch doerf), M k r The embodimentof the -present invention specifically 3 described, illustrated andclaimed herein is exemplary only, and is not intended to limit the scopeof the present invention, which is intended to be interpreted in thelight of the prior art-and the appended claimsonly, with dueconsiderationlfor the doctrine of equivalents.

I claim: V

l. A bolt lock attachable to a door, cooperable with a padlock to locksaid door to a jarnb, and selectively unlockable from one side of saiddoor and relockable from the other side of said door independently ofsaid padlock, comprising: hollow body means having first and second.ends, defining longitudinal recess means open at a longitudinal sideaperture and at an aperture in said first end, 7

position, to be maintained outwardly extended through said first-endaperture; staple means held in fixed relationship to said body means,cooperable with said padlock means to be interlocked therewith; sideslot means defined by said body means; spaced from said side and endapertures; hasp means passing through said slot means, having an openingtherein, at an external end, cooperable with said staple means to belocked thereto by said padlock; and having at an internal end a collarportion retainably slidable along said bolt means between two'spacedpositions relative to the longitudinal axis of said bolt means; wherebyexcess outward extension of the 'boltmeans is prevented, unlockingretraction of the bolt means by the longitudinal motion of the haspmeans in said side slot means is allowed, and unlocking retraction ofthe bolt means while the hasp means is immobilized is allowed, by themanual retraction of said bolt means from the second side of the door;catch means movably held by said body means and having a surface biasedagainst said flange means, a portion of said surface being engageablewith the flange means to maintain said bolt means in a withdrawnunlocked position and selectively d-isengageable from the flange meansto allow the motion of said bolt in its outward direction under theforce of said spring means; control means attached to said catch means,and an aperture in said body means allowing the manual grasping of. afirst portion of said control means from the first side of the door, asecond portion of said control means being operable from the second sideof the door, whereby said catch means may be disengaged from said flangemeans from either side of the door.

2; A bolt lock attachable to a door, cooperable with a padlock to locksaid door to a jamb, and selectively unlockable from one side of saiddoor and relockable from the other side of said door independently ofsaid padlock, comprising: hollow body means having first. and

second ends, defining longitudinal recess means open at a longitudinalside aperture and at an aperture in said first end, and. beingattachable fixedly to a first side of a door, said aperture beingadjacent to a corresponding aperture in said door; bolt means mountedlongitudinally within said recess means in said body means and passingthrowi. said first-end aperture in slidable engagement therewith; flangemeans projecting from said bolt means; spring means cooperable with saidbody means and said flange means to bias said bolt means in an outwarddirection,'whereby a portion of said bolt may be made, in a lockedposition, to be maintained outwardly extended through said first-endaperture;'stap1e means held in fixed relationship to said body means,cooperable with said padlock means to beinterlocked therewith; side slotmeans defined by said body means, spaced from said side and endapertures; hasp means passing through said slot means,

having an opening therein, at an external end, cooperable with saidstaple means to be locked thereto by said padlock, and having at aninternal end a collar portion retainably slidable along said bolt meansbetween two spaced positions relative to the longitudinal axis of saidbolt means; handle means fixedly attached to said bolt means andprojecting through said longitudinal side aperture and the correspondingaperture in the door to said second side to allow the forcible manualmovement of said bolt means in said inward direction; catch meansmovably held by said body means and having a surface biased against saidflange means, a portion of said surface being engageable with the flangemeans to maintain said bolt means in a withdrawn unlocked position andselectively disengageable from'the flange means to allow the motion ofsaid bolt in its outward direction under the force of said sprin means;control means attached to said catch means,,and an aperture in said bodymeans allowing the manual grasping of a first portion of said controlmeans from the first side of the door, a second portion of said control7 means being operable from the second side of the door,whereby'said'catch means may be disengaged from said flange means fromeither side of the door.

3. A 'bolt lock attachable to a door, coopera'ble with a padlock to locksaid door to a jamb, and selectively unlockable from oneside of saiddoor and relcckablc from the other side of said door independently ofsaid padlock, comprising: "hollow body means having first and secondends, defining longitudinal recess means open at a longitudinal sideaperture and at an aperture in said first end, and being attachablefixedly to a first side of a door, said side aperture being adjacent toa corresponding aperture in said door; bolt means mounted longitudinallywithin said recess means in said body means and passing through saidfirst-end aperture in slidable engagement therewith; flange meansprojecting from said bolt means; spring means cooperable with said bodymeans and said flange means to bias said bolt means in an outwarddirection, wherebya portion of said bolt may be made, in a lockedposition, to be maintained outwardly extended through said first-endaperture; staple means held in fixed relationship to said body means,coopera'ble with said padlock means to be interlocked therewith; sideslot means defined by said body means, spaced from said side and endapertures; hasp mean-s passing through said slot means, having anopening therein, at an external end, cooperable with said staple meansto be locked thereto by said padlock, and having at an internal end acollar portion retainably encompassingly slidable along said bolt means,said collar portion having an aperture therein, and said bolt meanshaving a pin portion projecting therefrom cooperable with said collaraperture to abut against said collar portion at two longitudinallyspaced opposing positions; whereby excess outward extension of the boltmeans is prevented, unlocking retraction of the bolt means by thelongitudinal motion of the hasp means in said side slot means isallowed, and unlocking retraction of the bolt means while the hasp meansis immobilized is allowed, by the manual retraction of said bolt meansfrom the second side of the door; handle means fixedly attached to saidbolt means and projecting through said longitudinal side aperture andthe corresponding aperture in the door to said second side to allow theforcible manual movement of said bolt means in said inward direction;catch means movably held by said body, means and having a surface biasedagainst said flange means, a portion of said surface themanual graspingof a first portion of said control means from the first side of'thedoor, a second portion of said control means being operable from thesecond side of the door, whereby said catch means may be disengaged fromsaid fiange means from either side of the door.

4. A bolt lock attachable to a door, cooperable with a padlock to locksaid door to a jam'b, and selectively unlockable from one side of saiddoor and relockable from the other side of said door independently ofsaid padlock, comprising: hollow body means having first and secondends, defining longitudinal recess means open at a longitudinal sideaperture and at an aperture in said first end, and being attachablefixedly to a first side of a door, said side aperture being adjacent toa corresponding aperture in said door; bolt means mounted longitudinallywithin said recess means in said 'body means and passing through saidfirst-end aperture in slidable engagement therewith; flange meansprojecting from said bolt means; spring means cooperable with said bodymeans and said flange means to bias said bolt means in an outwarddirection, whereby a portion of said bolt may be made, in a lockedposition, to be maintained outwardly extended through said first-endaperture; staple means held in fixed relationship to said body means,cooperable with said padlock means to 'be interlocked therewith; sideslot means defined by said body means, spaced from said side and endapertures; hasp means passing through said slot means, having an openingtherein, at an external end, cooperable with said staple means to belocked thereto by said padlock, and having at an internal end a collarportion retainably encompassingly slidable along said bolt means, saidcollar portion having an aperture therein, and said bolt means having apin portion projecting therefrom cooperable with said collar aperture toabut against said collar portion at two longitudinally spaced opposingpositions; whereby excess outward extension of the bolt means isprevented, unlocking retraction of the bolt means by the longitudinalmotion of the hasp means in'said side slot means is allowed, andunlocking retraction of the bolt means while the hasp means isimmobilized is allowed, by the manual retraction of said bolt means fromthe second side of the door; handle means fixedly attached to said boltmeans and projecting through said longitudinal side aperture and thecorresponding aperture in the door to said second side to allow theforcible manual movement of said bolt means in said inward direction;catch means movably held by said body means and having a surface biasedby the weight of the catch means against said flange means, a portion ofsaid surface being engageable with the flange means to maintain saidbolt means in a withdrawn unlocked position and selectivelydisengageable from the flange means to allow the motion of said bolt inits outward direction under the force of said spring means; controlmeans attached to said catch means, and an aperture in said body meansallowing the manual grasping of a first portion of said control meansfrom the first side of the door, a second portion of said control meansbeing extended through the aperture in the door and thus manuallyoperable from the second side of the door, whereby said catch means maybe disengaged from said flange means from either side of the door.

5. A bolt lock attachable to a door, cooperable with a padlock to locksaid door to a jamb, and selectively unlockable from one side of saiddoor and relockable from the other side of said door independently ofsaid padlock, comprising: hollow body means having first and secondends, defining longitudinal recess means open at a longitudinal sideaperture and at an aperture in said first end, and being attachablefixedly to a first side of a door, said side aperture being adjacent toa corresponding aperture in said door; bolt means mounted longitudinallywithin said recess means, and bolt support portions of said body meansrotatably and longitudinally slidably holding said bolt means, whichpasses through said first-end aperture in rotatable and slidable engage-1 ent therewith; flange, means projecting from said bolt means; springmeans cooperable with said body means and said flange means to bias saidbolt means in an out- W rd 'd rcc iomwh r y abortion of sai bolt be mae, n a lock d P 1 1 to e m in in outwardly extended through saidfirstend aperture; staple means held in fixed relationship to said bodymeans, cooperable with said padlock means to be interlocked therewith;side slot means defined by said body means, spaced from said side andendapertures; hasp means passing through said slot means, having anopening therein, at an external end, eooperable with said staple meansto be locked thereto by said padlock, and having at an internal end acollar portion retainably encompassingly slidable along said bolt means,said collar portion having an aperture therein, and said bolt meanshaving a pin portion projecting therefrom eooperable with said collaraperture to abut against said collar portion at two longitudinallyspaced opposing positions; whereby excess outward extension of the boltmeans is prevented, unlocking retraction of the bolt means by thelongitudinal motion of the hasp means in said side slot means isallowed, and unlocking retraction of the'bolt means while the hasp meansis immobilized is allowed, by the manual retraction of said bolt meansfrom the second side of the door; handle means fixedly attached to saidbolt means and projecting through said longitudinal side aperture andthe corresponding aperture in the door to said second side to allow theforcible manual movement of said bolt means in said inward direction;catch means movably held by said body means and having a surface biasedagainst said flange means, a portion of said surface being engageablewith the flange means to maintain said bolt means in a withdrawnunlocked position and selectively disengageable from the flange means toallow the motion of said bolt in its outward direction under the forceof said spring means; control means attached to said catch means, and anaperture in said body means allowing the manual grasping of a firstportion of said control means from the first side, of the door, a secondportion of said control means being operable from the second side of thedoor, whereby said catch means may be disengaged from said flange meansfrom either side of the door; said second portion of the control meansbeing operable by the manual swinging of said handle means, about thelongitudinal axis of the bolt means, against said second portion.

6. A bolt lock attachable to a door, cooperable with a padlock to locksaid door to a jamb, and selectively tin-- lockable from one side ofsaid door and relockable from the other side of said door independentlyof said padlock, comprising: hollow body means having first and secondends, defining longitudinal recess means open at a longitudinal sideaperture and at an aperture in said first end, and being attachablefixedly to a first side of a door, said side aperture being adjacent toa correspond ing aperture in said door; bolt means mountedlongitudinally within said recess means, and bolt support portions ofsaid body means rotatably and longitudinally slidably holding said boltmeans, which passes through said firstend aperture in rotatable andslidable engagement there: with; fiange means projecting from said boltmeans; spring means cooperable with said body means and said flangemeans to bias said bolt means in an outward direction, whereby a portionof said bolt may be made, in a locked position, to be maintainedoutwardly extended through said first-end aperture; staple means heldin-fixed relationship to said body means, cooperable with said padlockmeans to be interlocked therewith; side slot means defined by said bodymeans, spaced from said side and end apertures; haspmeans passingthrough said slot means, having an: opening therein, at an external end,cooperable with said staple means to be locked thereto by said padlock,and having at an internal end a collar portion retainablyenoornpas'singly slidable along said bolt means, said collar portionhaving an aperture therein, d a olt me n h in a p rad os protec ntherefrom cooperable with said collar aperture to abut against saidcollar portion at two longitudinally spaced 7 opposing positions;whereby excess outward extension of the bolt means is prevented,unlocking retraction of the bolt means by'the longitudinal motion of thehasp means in said side slot means is allowed, and unlocking retrac-ttion of the bolt means while the hasp means is immobilized is allowed,by the manual retraction of said bolt means from the second side of thedoor; handle means fixedly attached to said bolt means and projectingthrough said longitudinal side aperture and the corresponding aperturein the door to said second side to allow the forcible manual movement ofsaid bolt means in said inward direction; catch means rotatably held bysaid body means and having a cam surface biased by the weight of thecatch means against said flange means, a portion of said surface beingengageable with the flange means to maintain said bolt means in awithdrawn unlocked position and selectively disengageable from theflange means to allow the motion of said bolt in its outward directionunder the force of said spring means; control means attached to saidcatch means, and an aperture in said body means allowing the manualgrasping of a first portion of said control means from the first side ofthe door, a second portion of said control means being operable from thesecond side of the door, whereby said catch means may be disengaged fromsaid flange means from either side of the door; said second portion ofthe control means being operable by the manual swinging of said handlemeans, about the longitudinal axis of the bolt means, against saidsecond portion. r

7. A bolt lock attachable to a door, cooperable with a padlock to locksaid door to a jamb, and selectively unlockable from one side of saiddoor and relockable from the other side of said door independently ofsaid padlock, comprising: body means in the form of a longitudinalsemicylindrical shell, open at its diametric plane, having first andsecond ends, having an aperture in said first end and being providedwith portions by which it may be attached fixedly to a door with saiddiametric plane virtually in the plane of the surface of a first side ofsaid door and adjacent to a corresponding aperture in said door; boltmeans mounted longitudinally within said recess means, and bolt supportportions of said body means rotatably and longitudinally slidablyholding said bolt means, which passes through said first-end aperture inrotatable and slidable engagement therewith; flange means projectingfrom said bolt means; spring means cooperable with said body means andsaid flange means to bias said bolt means in an outward direction,whereby a portion of said bolt may be made, in a locked position, to bemaintained outwardly extended through said first-end-aperture; staplemeans held in fixed relationship to said body means, cooperable withsaid padlock means to be interlocked therewith; side siot means definedby said body means, spaced from said side and end apertures; hasp meanspassing through said slot means, having an opening therein, at anexternal end, cooperable with said staple means to be locked thereto bysaid padlock, and having at an internal end a collar portion retainablyslidable along said bolt means between two spaced positions relative tothe longitudinal axis of said bolt means; whereby excess outwardextension of the bolt means is prevented, unlocking retraction of thebolt means by the longitudinal motion of the hasp means in said sideslot means is allowed, and unlocking retraction of the bolt means Whilethe hasp means is immobilized is allowed, by the manual retraction ofsaid bolt means from the second side of the door; handle means fixedlyattached to said bolt means and projecting through said longitudinalside aperture and the corresponding aperture in the door to said secondside to allow the forcible manual movement of said bolt means in saidinward direction; catch means movably held by said body means and havinga surface biased. by the weight of the catch means against said flangemeans, a

portion of said surface being engageable with the flange means tomaintain said bolt means in a withdrawn unlocked position andselectively disengageable from the flange means to allow the motion ofsaid bolt in its outward direction under the force of said spring means;control means attached to :said catch means, and an aperture in saidbody means allowing the manual grasping of a first portion of saidcontrol means from the first side of the door, a second portion of saidcontrol means being operable from the second side of the door, wherebysaid catch means may be disengaged from said flange means from eitherside of the door.

8. A bolt lock attachable to a door, cooperable with a padlock to locksaid door to a jamb, and selectively unlockable from one side of saiddoor and relockable from the, other side of said door independently ofsaid padlock, comprising: hollow body means having first and secondends, defining longitudinal recess means open at a longi tudinal sideaperture and at an aperture in said first end, and being attachablefixedly to a first side of a door, said side aperture being adjacent toa corresponding aperture in said door; bolt means mounted longitudinallywithintsaid recess means in said body means and passing through saidfirst-end aperture in slidable engagement therewith; flange meansprojecting from said bolt means; spring means cooperable with said bodymeans and said flange means to bias said bolt means in an outwarddirection, whereby a portion of said bolt maybe made, in a lockedposition, to be maintained outwardly extended through said first-endaperture; staple means held in fixed relationship to said body means,cooperable with said padlock means to be interlocked therewith; sideslot means defined by said body means, spaced from said side and endapertures; hasp means passing through said slot means, having an openingtherein, at an external end, cooperable with said staple means to belocked thereto by said padlock, and having at an internal end a collarportion retainably slidable along said bolt means between two spacedpositions relative to the longitudinal axis of said bolt means; wherebyexcess outward extension of the bolt means is prevented, unlockingretraction of the bolt means by the longitudinal motion of the haspmeans in said side slot means is allowed, and unlocking retraction ofthe bol-t means while the hasp means is immobilized is allowed, by themanual retraction of said bolt means from the second side of the door;handle means fixedly attached to said bolt means and projecting throughsaid longitudinal side aperture and the corresponding aperture in thedoor 7 to said second side to allow the forcible manual movement of saidbolt means in said inward direction; catch means movably held by saidbody means, having a cam surface, and spring means biasing said surfaceagainst said flange means, a portion of said surface being engageablewith the flange means to maintain said bolt means in a withdrawnunlocked position and selectively disengageable from the flange means toallow the motion of said bolt in its outward direction under the forceof said spring means; control means attached to said catch means, and anaperture in said body means allowing the manual grasping of a firstportion of said control'means from the first side of the door, asecondportion of said control means being extended through the aperturein the door and thus manually operable from the second side of the door,whereby said catch means maybe disengaged from said flange means fromeither side of the door,

References Cited in the file of this patent UNITEDVSTA TES PATENTS1,317,092 Maurer et al Sept. 23, 1919 1,496,551" McCulloch June 3, 19241,675,033 Lefkowitz 'June 26, 1928 2,475,478

Clair July s, 1949

